What is clean code?
Clean code is code that is easily read and understood by another person. The computer doesn't care about the format of your code, or if it has any comments. It doesn't care if you are using a shorthand if statement or a long one. The output will be the same. If another person looks at your code, can they (almost) instantly tell what the code is doing? Or what problem the code is there to solve? Structure & organization is important as well. If I want to find the functions related to a user, I should be able to very quickly scan the project and find that. Similarly, I shouldn't have to sift through 2,000 lines of CSS to find the styles relating to a specific UI component.